Good Riddles

Question: I am in everything and in nothing, what am I?

Question:

Take me for a spin and I'll make you cool,
but use me when it's cool and you're a fool.

What am I?

Question: Can a man legally marry his widow's sister in the state of California?

Question: You get trapped in a psycho's mansion during a power outage. You try to get out by going through a series of rooms: the first one is blue, the second one is also blue, but the third one is golden. After you go through all of these rooms you find the psycho. He tells you that you must hold your breathe under water for 10 minutes, wrestle a large bear, or sit in the electric chair for ten seconds while it is on.

Which should you choose?

Question: You are locked in a car and have a hammer. How do you get out?